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Purple Mountain Observatory
The Purple Mountain Observatory (), also known as Zijinshan Astronomical Observatory is an astronomical observatory located on the Purple Mountain in the east of Nanjing. Description The Purple Mountain Observatory was established in 1934 funded by the Nationalist Government of the Republic of China and administered by Academia Sinica. The longtime director of the observatory from 1950 to 1984 was Chinese astronomer Zhang Yuzhe (, 1902–1986, also known as Y. C. Chang). By the late 1980s, increasing light pollution in Nanjing meant Purple Mountain was no longer viable as a working observatory. It has since shifted its focus to public education, with much of the actual scientific work being carried out in its five branch observatories located at Qinghai (in Delingha), Ganyu, Xuyi, Honghe (in Jiamusi), and Qingdao. The Minor Planet Center credits the observatory, simply referred to as Nanking, with the discovery of 149 minor planets between 1955 and 1983, while the obse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purple Mountain , an American indie rock band
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Purple Mountain may refer to: China * Purple Mountain (Nanjing), a mountain in Nanjing, Jiangsu Ireland * Purple Mountain (Kerry), a mountain in County Kerry United States * Purple Mountain (Alaska), a mountain in Alaska * Purple Peak (Colorado), a mountain in Colorado * Purple Mountain (Oregon), a mountain in Oregon * Purple Mountain (Washington), a mountain in Washington * Purple Mountain (Wyoming), a mountain in Yellowstone National Park, Wyoming See also * Purple Mountains Purple Mountains was an American indie rock project formed by musician and poet David Berman. The project debuted in May 2019, over a decade after the dissolution of Berman's previous group Silver Jews. An eponymous album was released in July ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jiamusi
Jiamusi (Manchu: ; formerly Kiamusze) is a prefecture-level city in eastern Heilongjiang province, People's Republic of China. Located along the middle and lower reaches of the Songhua River, it faces Russia's Khabarovsk Krai across the Ussuri River and the Heilongjiang. In 2018, Jiamusi had a GDP of RMB 101.2 billion with a 4.3% growth rate. Its population was 2,156,505 at the 2020 census whom 862,555 lived in the built up area made of 4 urban districts. History Early history In 1720, Jiamusi was first named Giyamusi (, ) during the Kangxi period by the Nanai people. The word Giyamusi originally means Inn in the Manchu language. Because of the harsh climate and short growing season, the region of today's Jiamusi City was largely uncultivated. Since the Qing government opened Manchuria for farming in order to prevent the conquest of the area by Russia, Jiamusi developed as a small trading post under the name Dongxing () since 1888. When Han Chinese and Manchu settlers began t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3494 Purple Mountain
3494 Purple Mountain, provisional designation , is a bright Vestian asteroid and a formerly lost minor planet from the inner regions of the asteroid belt, approximately in diameter. First observed in 1962, it was officially discovered on 7 December 1980, by Chinese astronomers at the Purple Mountain Observatory in Nanking, China, and later named in honor of the discovering observatory. The V-type asteroid has a rotation period of 5.9 hours. Orbit and classification ''Purple Mountain'' is a core member of the Vesta family (), a giant asteroid family of typically bright V-type asteroids. Vestian asteroids have a composition akin to cumulate eucrites (HED meteorites) and are thought to have originated deep within 4 Vesta's crust, possibly from the Rheasilvia crater, a large impact crater on its southern hemisphere near the South pole, formed as a result of a subcatastrophic collision. Vesta is the main belt's second-largest and second-most-massive body after . Based on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2456 Palamedes
2456 Palamedes is a large Jupiter trojan from the Greek camp, approximately in diameter. It was discovered on 30 January 1966, by astronomers at the Purple Mountain Observatory in Nanking, China. The assumed C-type asteroid has a rotation period of 7.24 hours and belongs to the 50 largest Jupiter trojans. It was named after Palamedes from Greek mythology. Orbit and classification ''Palamedes'' is a dark Jovian asteroid orbiting in the leading Greek camp at Jupiter's Lagrangian point, 60 ° ahead of the Gas Giant's orbit in a 1:1 resonance ''(see Trojans in astronomy)''. It is also a non-family asteroid in the Jovian background population. It orbits the Sun at a distance of 4.7–5.5 AU once every 11 years and 7 months (4,244 days; semi-major axis of 5.13 AU). Its orbit has an eccentricity of 0.07 and an inclination of 14 ° with respect to the ecliptic. The body's observation arc begins with a precovery taken at Palomar Observatory in February 1953, ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2363 Cebriones
2363 Cebriones is a large Jupiter trojan from the Trojan camp, approximately in diameter. It was discovered on 4 October 1977, by astronomers at the Purple Mountain Observatory in Nanking, China. The dark D-type asteroid is one of the 40 largest Jupiter trojans and has a rotation period of 20 hours. It was named after Cebriones, Hektor's charioteer from Greek mythology. Orbit and classification ''Cebriones'' is a dark Jovian asteroid orbiting in the trailing Trojan camp at Jupiter's Lagrangian point, 60 ° behind its orbit in a 1:1 resonance ''(see Trojans in astronomy)''. It is also a non-family asteroid of the Jovian background population. It orbits the Sun at a distance of 5.0–5.4 AU once every 11 years and 11 months (4,338 days; semi-major axis of 5.21 AU). Its orbit has an eccentricity of 0.04 and an inclination of 32 ° with respect to the ecliptic. The body's observation arc begins with a precovery taken at Palomar Observatory in August 1953, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2260 Neoptolemus
2260 Neoptolemus is a large Jupiter trojan from the Greek camp, approximately in diameter. It was discovered on 26 November 1975, by astronomers at the Purple Mountain Observatory in Nanking, China. The dark D-type asteroid is one of the 50 largest Jupiter trojans and has a rotation period of 8.18 hours. It was named after Neoptolemus from Greek mythology. Orbit and classification ''Neoptolemus'' is a dark Jovian asteroid orbiting in the leading Greek camp at Jupiter's Lagrangian point, 60 ° ahead of its orbit in a 1:1 resonance ''(see Trojans in astronomy)''. It is also a non-family asteroid in the Jovian background population. This asteroid orbits the Sun at a distance of 5.0–5.4 AU once every 11 years and 10 months (4,326 days; semi-major axis of 5.2 AU). Its orbit has an eccentricity of 0.04 and an inclination of 18 ° with respect to the ecliptic. The body's observation arc begins with its first observation as ' at McDonald Observatory in December ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2223 Sarpedon
2223 Sarpedon is a dark Jupiter trojan from the Trojan camp, approximately in diameter. It was discovered on 4 October 1977, by astronomers at the Purple Mountain Observatory near Nanking, China. The D-type asteroid belongs to the 30 largest Jupiter trojans and has a rotation period of 22.7 hours. It was named after the Lycian hero Sarpedon from Greek mythology. Orbit and classification ''Sarpedon'' is orbiting in the trailing Trojan camp, at Jupiter's Lagrangian point, 60 ° behind its orbit in a 1:1 resonance . It is also a non-family asteroid of the Jovian background population. It orbits the Sun at a distance of 5.2–5.3 AU once every 11 years and 12 months (4,376 days; semi-major axis of 5.24 AU). Its orbit has an eccentricity of 0.02 and an inclination of 16 ° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Nanking. Physical characteristics In the Tholen classification, ''Sarpedon'' is s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trojan Asteroid
In astronomy, a trojan is a small celestial body (mostly asteroids) that shares the orbit of a larger body, remaining in a stable orbit approximately 60° ahead of or behind the main body near one of its Lagrangian points and . Trojans can share the orbits of planets or of large moons. Trojans are one type of co-orbital object. In this arrangement, a star and a planet orbit about their common barycenter, which is close to the center of the star because it is usually much more massive than the orbiting planet. In turn, a much smaller mass than both the star and the planet, located at one of the Lagrangian points of the star–planet system, is subject to a combined gravitational force that acts through this barycenter. Hence the smallest object orbits around the barycenter with the same orbital period as the planet, and the arrangement can remain stable over time. In the Solar System, most known trojans share the orbit of Jupiter. They are divided into the Greek camp at (a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroid
An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. Of the roughly one million known asteroids the greatest number are located between the orbits of Mars and Jupiter, approximately 2 to 4 AU from the Sun, in the main asteroid belt. Asteroids are generally classified to be of three types: C-type, M-type, and S-type. These were named after and are generally identified with carbonaceous, metallic, and silicaceous compositions, respectively. The size of asteroids varies greatly; the largest, Ceres, is almost across and qualifies as a dwarf planet. The total mass of all the asteroids combined is only 3% that of Earth's Moon. The majority of main belt asteroids follow slightly elliptical, stable orbits, revolving in the same direction as the Earth and taking from three to six years to co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
62P/Tsuchinshan
62P/Tsuchinshan, also known as Tsuchinshan 1, is a periodic comet discovered on 1965 January 1 at Purple Mountain Observatory, Nanking. It will next come to perihelion on 25 December 2023 at around apparent magnitude 8, and will be from Earth and 110 degrees from the Sun. During the 2004 perihelion passage the comet brightened to about apparent magnitude 11. The comet was not observed during the 2011 unfavorable apparition since the perihelion passage occurred when the comet was on the far side of the Sun. On 2049 April 1 the comet will pass about from Mars. See also *List of numbered comets This is a list of periodic comets that were numbered by the Minor Planet Center after having been observed on at least two occasions. Their orbital periods vary from 3.2 to 366 years. there are 436 numbered comets (1P–436P), most of them being ... References External links Orbital simulationfrom JPL (Java) Horizons Ephemeris– Seiichi Yoshida @ aerith.net Elements and E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
60P/Tsuchinshan
60P/Tsuchinshan, also known as Tsuchinshan 2, is a periodic comet in the Solar System with an orbital period of 6.79 years. Tsuchinshan is the Wade-Giles transliteration corresponding to the pinyin ''Zĭjīn Shān'', which is Mandarin Chinese for "Purple Mountain". It was discovered at the Purple Mountain Observatory, Nanking, China on 11 January 1965 with a magnitude estimated as a very faint 15. The elliptical orbit was computed to give a perihelion date of 9 February 1965 with an orbital period of 6.69 years. Revised calculations predicted the next perihelion would be on 28 November 1971 and Elizabeth Roemer of the University of Arizona successfully relocated the comet with the 154-cm reflector at Catalina. It was also observed in 1978, 1985, 1991-1992, and 1998-1999. The comet peaked at about apparent magnitude 16.3 in 2012. On 29 December 2077 the comet will pass from Mars. See also * List of numbered comets This is a list of periodic comets that were numbered by the M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comet
A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process that is called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail. These phenomena are due to the effects of solar radiation and the solar wind acting upon the nucleus of the comet. Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times Earth's diameter, while the tail may stretch beyond one astronomical unit. If sufficiently bright, a comet may be seen from Earth without the aid of a telescope and may subtend an arc of 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures and religions. Comets usually have highly eccentric elliptical orbits, and they have a wide range of orbital periods, ranging from several years to potentially several ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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